- published: 13 Oct 2016
- views: 204
A digital camera or digicam is a camera that encodes digital images and videos digitally and stores them for later reproduction. Most cameras sold today are digital, and digital cameras are incorporated into many devices ranging from PDAs and mobile phones (called camera phones) to vehicles.
Digital and film cameras share an optical system, typically using a lens with a variable diaphragm to focus light onto an image pickup device. The diaphragm and shutter admit the correct amount of light to the imager, just as with film but the image pickup device is electronic rather than chemical. However, unlike film cameras, digital cameras can display images on a screen immediately after being recorded, and store and delete images from memory. Many digital cameras can also record moving videos with sound. Some digital cameras can crop and stitch pictures and perform other elementary image editing.
The history of the digital camera began with Eugene F. Lally of the Jet Propulsion Laboratory, who when he wasn't coming up with ways to create artificial gravity was thinking about how to use a mosaic photosensor to capture digital images. His 1961 idea was to take pictures of the planets and stars while travelling through space to give information about the astronauts' position. Unfortunately, as with Texas Instrument employee Willis Adcock's filmless camera (US patent 4,057,830) in 1972, the technology had yet to catch up with the concept.
DIGITAL CAMERA
Digital Camera
Digital Camera
กล้องดิจิตอลชนิดต่างๆ Digital Cameras
Best Digital Camera 2017 | Best Digital Cameras
digital camera